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11/01/07 - USPTO Class 428 | 108 views | #20070254138 | Prev - Next | About this Page

Layered security material and method of manufacturing such

Title: Layered security material and method of manufacturing such

Related Patent Categories: Stock Material Or Miscellaneous Articles, Structurally Defined Web Or Sheet (e.g., Overall Dimension, Etc.), Including Variation In Thickness, Composite Web Or Sheet

Brief Patent Description - Full Patent Description - Patent Claims

The Patent Description & Claims data below is from USPTO Patent Application 20070254138, Layered security material and method of manufacturing such.

1-26. (canceled)

27. A layered material such as a paper, cardboard, or nonwoven web having a printable surface for text or graphics, comprising a base web (1) and a luminescing coating layer containing an identification agent sensitive to UV light, a so-called identification layer (2), the base web (1) includes at least one coating layer, an identification layer (2), the surface profile of which conforms essentially to the natural formation of the base web (1) and to the surface profile of other coating layers possibly applied on top of the base web in such a way that an identification layer (2) with an altering thickness is intentionally provided, for example, by means of a blade coating technique, whereby the coating layer at the areas of the identification layer (2) corresponding to the ridges of the base layer (1) is applied to be thinner than that at the areas corresponding to the valleys of the base layer (1); and the identification layer (2) advantageously covering the entire underlying surface of paper, cardboard, or nonwoven web; and the identification layer (2) being non-continuous as regards its intensity when reacting to UV light, due to the alterations in the thickness of the coating layer, causing a cloud-like appearance.

28. A layered material in accordance with claim 27, wherein the base web (1) further includes at least one coating layer containing a contrasting identification agent or an optical whitener, in other words a so-called contrast layer (3), which is non-continuous, for example, in the form of a random spot pattern, a striped pattern, a so-called logo or some other non-continuous pattern produced by a known printing technique.

29. A layered material in accordance with claim 28, wherein the patterns forming the contrast layer (3) contain an optical whitener or a contrasting identification agent and a binder, such as e.g. CMC, starch, PVA or the like.

30. A layered material in accordance with claim 28, wherein the patterns forming the contrast layer (3), e.g. the non-continuous patterns containing an optical whitener or a contrasting identification agent, are two-dimensional and mainly of such a size that they are visible by the eye (the greatest dimension greater than 30.mu.m), when the layered material having a coating layer sensitive to UV light is illuminated with UV light or the like.

31. A layered material in accordance with claim 28, wherein the luminescing identification agent sensitive to UV light or the like arranged in connection with the identification layer (2) of the layered material is of different colour or of different shade of colour than the contrasting identification agent or the optical whitener used in the contrast layer (3).

32. A layered material in accordance with claim 28, wherein the identification layer (2) is applied immediately on top of the outermost contrast layer (3).

33. A layered material in accordance claim 28, further comprising between the identification layer (2) and the contrast layer (3) at least one further coating layer, a so-called depth layer (4, 5), which is preferably of the UV-dull type, containing, e.g., TiO2, which absorbs UV light i.e. a coating layer, which does not contain optical whitener or identification agents.

34. A layered material in accordance with claim 28, wherein the colours of the contrast layers (3) and the identification layer (2) are different when illuminated with UV light or the like.

35. A layered material in accordance with claim 27, wherein the base web (1) comprises an identification agent of the covert-type, for example, fibres or particles visible with UV light.

36. A layered material in accordance with claim 27, further comprising at least one forensic-type identification agent in the base web (1) of the layered material, or in some other coating layer, such as the surface sizing, in one of the coating colours used, or in combinations of these, the identification of this identification agent being carried out by a special method and/or in special conditions, such as in a laboratory.

37. A layered material in accordance with claim 27, wherein the base web (1) comprises several coating layers, at least two of which contain luminescing identification agent.

38. A layered material in accordance with claim 27, wherein the base web (1) comprises several coating layers, at least two of which contain an optical whitener or a luminescing identification agent; and that at least one of the coating layers containing an optical whitener or a luminescing agent is non-continuous, for example, in the form of a random spot pattern, a striped pattern, a so-called logo or some other non-continuous pattern.

39. A layered material in accordance with claim 28, wherein the contrast layer applied on top of the base web (1) is disposed underneath the identification layer (2), i.e. closer to the base web.

40. A layered material in accordance with claim 28, wherein the contrast layer (3) is closer to the surface layer than the identification layer (2).

41. A layered material in accordance with claim 28, wherein the non-continuous patterns of the contrast layer (3) are two-dimensional, in other words they do not arise as separate elevations from the surface on top of which the contrast layer (3) has been applied, whereby in connection with the coating layers applied on top of the contrast layer, coating techniques, for example blade coating, rod coating or film transfer size press coating technique are used in producing the coating layers, which are desired to extend over the whole surface as a covering layer.

42. A method of manufacturing a layered web-like material, the web-like material comprising a base web (1), of for example paper, cardboard, or nonwoven and this web-like material containing identification agent reacting to UV light or the like, wherein at least one identification layer (2) is applied on the base web (1), the identification layer following the surface profile of the base web (1) and of the other coating layers possibly disposed on top of the base web in such a way that an identification layer (2) with an altering thickness is intentionally produced, for example, by means of blade coating, rod coating or coating transfer size press coating technique, whereby the coating layer at the areas of the identification layer (2) corresponding to the ridges of the base layer (1) is applied to be thinner than that at the areas corresponding to the valleys of the base layer (1), and the identification layer (2) advantageously covering the entire underlying surface of paper, cardboard, or nonwoven web, and the identification layer (2) being non-continuous in intensity, when reacting to UV light, due to the alterations in the thickness of the coating layer, causing a cloud-like appearance.

43. A method in accordance with claim 42, wherein at least one two-dimensional, non-continuous coating layer containing an optical whitener, a contrasting luminescing identification agent or the like, in other words a so-called contrast layer (3), is supplied on the web-like base web (1) for example as a random spot pattern, a striped pattern, a so-called logo or some other non-continuous pattern produced by a known printing technique.

44. A method in accordance with claim 43, characterized in that applied on the web-like base web (1), at least two non-continuous layers, contrast layers (3), containing a contrasting luminescing identification agent or an optical whitener, for example, as a random spot pattern, a striped pattern, as a so-called logo or some other non-continuous pattern produced by a suitable printing technique, in such a way that the contrast layers are either immediately one on top of the other or that there is at least one further coating layer between them and that one or more coating layers is/are applied at least on the outermost contrast layer, at least one of layers, the so-called identification layer (2), containing luminescing identification agent, and the layer/layers having been coated by utilizing such a coating technique that the thickness profile of the coating follows the surface profile of the base web (1) and of the other coating layers possibly applied on top of it, the identification layer (2) preferably covering the whole underlying surface area and the coating layer containing an identification agent being non-continuous in intensity when reacting to UV light or the like, thus causing a cloud-like appearance.

45. A method in accordance with claim 43, wherein the contrast layer (3) is preferably coated by spray coating technique or the like.

46. A method in accordance with claim 43, wherein at least two spray coating units or the like are used when forming the contrast layer (3), whereby contrast patterns of different colours or shapes or contrast patterns of similar colour but of different intensities or thicknesses are produced.

47. A method in accordance with claim 42, characterized in that blade coating, rod coating or film transfer size press coating technique is used in forming at least one coating layer.

48. A method in accordance with claim 43, characterized in that preferably the coating layers other than the contrast layer (3) have been formed, for example, by a so-called blade coating technique, or by some other known paper coating technique following the formation of a paper web, which brings about thickness alterations in the coating layer.

49. A method in accordance with claim 43, wherein the forming of the web-like material and coating it with the contrast layer (3), the identification layer (2) and the other coating layers being required before printing, takes place in connection with the manufacture of the web.

50. A method in accordance with claim 42, wherein at least one of the coating processes of the web-like material is performed by a separate coating machine.

51. A method in accordance with claim 42, characterized in that identification agent creating a luminescing effect when reacting to UV light is applied to the layered web-like material after the basic web formation, in other words for example in a paper machine subsequent to the headbox.

52. A method in accordance with claim 42, wherein the identification agents and/or optical whiteners creating a luminescing effect when reacting to UV light are applied to the layered web-like material after the basic web formation, in other words for example in a paper machine subsequent to the headbox.

Brief Patent Description - Full Patent Description - Patent Claims

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